3D Ising Superconductivity in As-Grown Sn Intercalated TaSe<sub>2</sub> Crystal.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40094488.
- Also identified by DOI 10.1021/acs.nanolett.5c00196.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
2D Ising superconductivity emerges in noncentrosymmetric 2D materials, differing from conventional 2D/3D superconductivity. Here, we report the synthesis of a new polymorph of intercalated layered materials, where two layers of Sn are intercalated in between every two layers of TaSe<sub>2</sub> (2Sn-2TaSe<sub>2</sub>), in contrast to the commonly observed single-layer intercalation. Remarkably, the as-grown 2Sn-2TaSe<sub>2</sub> single crystals possess a high quality of crystallinity and showcase 3D Ising superconductivity. Transport measurements and theoretical calculations show that the 2Sn-2TaSe<sub>2</sub> having C<sub><i>3v</i></sub> point group symmetry induces formation of Ising pairs, which intriguingly exhibits, on one hand, an in-plane upper critical field surpassing the Pauli limit by a factor of 2.6 like a 2D Ising superconductor but, on the other hand, a temperature- and field-dependent conductivity characteristic of conventional 3D superconductivity. Our findings demonstrate the persistent 2D Ising pairing in 3D, paving the way for exploring dimensional physical behaviors by intercalating layered materials.